The ninth day of the Australian Open saw the first set of quarter-finals take place - and a few familiar faces move into the final four.

In the women's draw, Serena Williams claimed she was "a little lethargic" following a bout of food poisoning, but the world No.1 needed just 92 minutes to beat long-time rival Maria Sharapova - taking their career head-to-head record to 19-2.

On the men's side, Roger Federer kept his hopes of another grand slam success alive, setting up a potential semi-final with tournament favourite Novak Djokovicl.

Here is what you missed overnight at the Australian Open:

Serena's cruise

Too good: Williams made light work of her long-time rival (Image: AFP/Getty Images)